Global Patent Index - EP 4068478 A1

EP 4068478 A1 20221005 - SEALING PLATE EQUIPPED WITH GAS DISCHARGE VALVE AND SECONDARY BATTERY USING THE SAME

Title (en)

SEALING PLATE EQUIPPED WITH GAS DISCHARGE VALVE AND SECONDARY BATTERY USING THE SAME

Title (de)

DICHTPLATTE MIT GASAUSLASSVENTIL UND SEKUNDÄRBATTERIE DAMIT

Title (fr)

PLAQUE D'ÉTANCHÉITÉ ÉQUIPÉE D'UNE SOUPAPE DE DÉCHARGE DE GAZ ET BATTERIE SECONDAIRE L'UTILISANT

Publication

EP 4068478 A1 20221005 (EN)

Application

EP 22161533 A 20220311

Priority

JP 2021060890 A 20210331

Abstract (en)

According to the present disclosure, there is provided a sealing plate equipped with a gas discharge valve that reduces processing load and work hardening during molding. A gas discharge valve of a sealing plate disclosed herein has a flat plate-shaped base portion and a protruding portion protruding from a first surface of the base portion in a first direction, an annular thin-walled portion having a thickness smaller than the thickness of the protruding portion is provided around the protruding portion, and a first surface of the thin-walled portion is substantially on the same surface as the first surface of the base portion. In the gas discharge valve having the above configuration, the total amount of metal that is plastically deformed is reduced by limiting the formation region of the thin-walled portion to the periphery of the protruding portion.

IPC 8 full level

H01M 50/15 (2021.01); H01M 50/342 (2021.01)

CPC (source: CN EP US)

H01M 10/0525 (2013.01 - CN); H01M 50/15 (2021.01 - EP); H01M 50/184 (2021.01 - CN); H01M 50/30 (2021.01 - CN); H01M 50/342 (2021.01 - EP); H01M 50/3425 (2021.01 - EP US); H01M 50/103 (2021.01 - EP); H01M 2200/20 (2013.01 - US); Y02E 60/10 (2013.01 - EP)

Citation (applicant)

JP 2012252809 A 20121220 - HITACHI VEHICLE ENERGY LTD

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 4068478 A1 20221005; CN 115149167 A 20221004; CN 115149167 B 20240618; JP 2022156945 A 20221014; JP 7325474 B2 20230814; US 2022320675 A1 20221006

DOCDB simple family (application)

EP 22161533 A 20220311; CN 202210327067 A 20220330; JP 2021060890 A 20210331; US 202217703990 A 20220325